import Vue from 'vue'
import Router from 'vue-router'
import routes from './routers'
import store from '@/store'
import ViewUi from 'view-design'
import {setToken, getToken, canTurnTo, setTitle, getLoginUser} from '@/libs/util'
import config from '@/config'
const { homeName } = config

Vue.use(Router)
const router = new Router({
  routes,
  mode: 'hash' //hash URL带#，history URL不带#，但页面刷新会崩溃
})

/** 解决报错错问题：NavigationDuplicated: Avoided redundant navigation to current location: "/actual/distribute".*/
//获取原型对象上的push函数
const originalPush = Router.prototype.push
//修改原型对象中的push方法
Router.prototype.push = function push(location) {
  return originalPush.call(this, location).catch(err => err)
}

const LOGIN_PAGE_NAME = 'login'

const turnTo = (to, access, next) => {
  //console.log("*********utils.turnTo(),to=%o, access=%o, next=%o",to, access, next);
  if (canTurnTo(to.name, access, routes)) next() // 有权限，可访问
  else next({ replace: true, name: 'error_401' }) // 无权限，重定向到401页面

}

router.beforeEach((to, from, next) => {
  ViewUi.LoadingBar.start()
  const token = getToken()
  const userInfo = getLoginUser();
  if (!token && to.name !== LOGIN_PAGE_NAME) {
    // 未登录且要跳转的页面不是登录页
    next({
      name: LOGIN_PAGE_NAME // 跳转到登录页
    })
  } else if (!token && to.name === LOGIN_PAGE_NAME) {
    // 未登陆且要跳转的页面是登录页
    next() // 跳转
  } else if (token && to.name === LOGIN_PAGE_NAME) {
    // 已登录且要跳转的页面是登录页
    next({
      name: homeName // 跳转到homeName页
    })
  } else {
    turnTo(to, [userInfo.loginName], next)
  }
})

router.afterEach(to => {
  setTitle(to, router.app)
  ViewUi.LoadingBar.finish()
  window.scrollTo(0, 0)
})

export default router
